Malicious PDF — malware analysis report

Static analysis result for SHA-256 152be17ad22d8375…

MALICIOUS

PDF

86.1 KB Created: 2020-08-13 18:56:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e86e0396e8986727c26feef25349347 SHA-1: d44e29db7f49ae3b7301f59cfd6c963ac46c8007 SHA-256: 152be17ad22d83755da0e8a6ae78ffb2be175d1db9b0b7b90b41e073270f6cf7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by a machine learning classifier and contains embedded links pointing to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that mirrors the one found in the heuristics, suggesting a lure to a malicious site. The presence of numerous external PDF links further indicates a link farm or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/wb?keyword=biografia%20tadeo%20isidoro%20cruz%20pdf
    • http://files.pineywoodsaudubonsocietytx.org/uploads/1/3/1/4/131409574/6200936.pdf
    • http://medope.theyouthchallenge.com/uploads/1/3/1/6/131607063/9063176.pdf
    • http://files.bargainbusnyc.com/uploads/1/3/1/8/131856257/68dbc.pdf
    • http://bepip.roamingbuffalo.us/uploads/1/3/0/7/130775320/wuveguwazi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/7793/5004/files/alelopatia_cultivos.pdf
    • https://cdn.shopify.com/s/files/1/0437/7811/3690/files/56035605776.pdf
    • https://cdn.shopify.com/s/files/1/0432/4209/4755/files/dg_a_b_c_d_check.pdf
    • https://cdn.shopify.com/s/files/1/0446/6468/4697/files/tutorial_of_ms_excel_2020.pdf
    • https://cdn.shopify.com/s/files/1/0447/5761/4741/files/arc_length_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/4336/4759/files/3257965555.pdf
    • https://cdn.shopify.com/s/files/1/0430/8713/4882/files/33330011305.pdf
    • https://cdn.shopify.com/s/files/1/0431/4369/2445/files/lipaxizegiwonixekowi.pdf
    • https://cdn.shopify.com/s/files/1/0431/9212/3560/files/icao_annex_1.pdf
    • https://cdn.shopify.com/s/files/1/0431/3477/9553/files/87094697897.pdf
    • https://cdn.shopify.com/s/files/1/0427/9717/0847/files/wizawubijavanixagolomo.pdf
    • https://cdn.shopify.com/s/files/1/0430/7868/0730/files/automatismes_et_automatique_cours_et_exercices_corrigs.pdf
    • https://cdn.shopify.com/s/files/1/0433/9915/1768/files/2_and_4_stroke_engine.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001106b.bin
597253649b395a07fd9f7f807fe8ab876ecebe1f429e9c3e7b67602f93038793		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1106B 5388 bytes
font_01_sfnt_off000122d8.bin
0a611cc72874e463338a3a5dd280868e7f4d531724feb3fcd49e372e277b415a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x122D8 11916 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.